Lock means for door control mechanism



Nov. 10, 1953 EML. ALLEN LOCK MEANS FOR DOOR CONTROL MECHANISM Fild Nov. 50, 1946 6 Sheets-Sheet l Flee INVENTOR. EDwm L. ALLEN BY ATTORNEY Nov. 10, 1953 E; L. ALLEN LOCK MEANS FOR DOOR CONTROL MECHANISM 6 Sheets- Sheet 2 Filed Nov. 30, 1946 Fla-1.5

. IN V EN TOR.

EDWIN L.. A LEN BY ATTO PNEY INVENTOR.

ATTORNEY E. L. ALLEN LOCK MEANS FOR DOOR CONTROL MECHANISM Nov. 10, 1953 6 Sheets-Sheet 3 Filed Nov. 50, 1946 Eowm L ALLEN BY F FIG. 6

Nov. 10, 1953 L N 2,658,782

LOCK MEANS FOR DOOR CONTROL MECHANISM Filed Nov. 50, 1946 6 Sheets-Sheet 4 54 .1;EZLIQQZZZZ-I-ZZZQZEZIZ e K a 7"": 60 U Q @n 9+ HG. 6 FIG. 9

INVENTOR.

3 EDWIN L. ALLEN A TTOPNE'Y.

E. L. ALLEN LOCK MEANS FOR DOOR CONTROL MECHANISM Nov. 10, 1953 I 6 Sheets-Sheet 5 Filed Nov. 30, 1946 INVENTOR. EDWIN L. ALLEN M 72 ATTORNEY E. L. ALLEN LOCK MEANS FOR DOOR CONTROL MECHANISM Nov. 10, 1953 6 Sheets-Sheet 6 Filed NOV. 50, 1946 INVENTOR. EDWIN L. ALLEN ATTORNEY.

Patented Nov. 10, 1953 LOUIS S FOR DOOR CONTROL MECHANISM Edwin L. Alien, Cleveland Heights, Ohio, assignor, by ni sne assignments, to Rudolph I. Schonitzer,

Qlevela d, Ohio Application November 30, 1946, Serial No. 713,220

7 Claims. 1

This invention relates to door control mechanism characterized by means for receiving energy as a function of door closing movement, latching of the door, or both; storing of such energy while the door remains closed and latched; and when door opening is desired, release of such energy for the purpose of unlatching the door, urging it openwise, or both.

Such a door control mechanism is disclosed in Patent No. 2,094,413 issued September 28, 1937, to Rudolph I. Schonitzer wherein appears mount-,- ed on complementary wall and door structures, complementary latch pin and latch plate means and, for control of the movable member of the complementary pair (as there shown the latch plate means) associated detent and trip means mounted and arranged for operator responsive detent-tripping operation.

Said patent also discloses means for preventing, when desired, trippin or latch releasing actuation of the detent means, by blocking of the tripping or actuating path of a member of the mechanism.

An object of the present inventionis to provide improved means for preventing such tripping; and for the purpose, the invention con.- templates optiona'l prevention of tripping such detent means, while permitting nevertheless the normal operation by the operator of the actuate ing member by which tripping is otherwise ac complished. In other words, the invention pro! vides means to predetermine the tripping or actuating effectiveness of operation of the actuating member.

Thus whereas in the prior art, as exemplified in said patent, unauthorized tripping attempt by forcing of the actuating member against the blocking means might result in damaging the mechanism, such possibility of damage is eliminated by the present invention.

Another object of the invention is to provide for exercise of the described optional control of tripping effectiveness, from a plurality of locations, such as inside and outside locations, and to provide lock means if desired for such control.

Still another object of the invention is to provide assembly of the parts of the mechanism in units improving the facility of their installation for subsequent cooperation.

. the line 1 1, Fig. 6, the sectional plane of Fig.

Further objects and advantages will be apparent from the following description taken in connection with the accompanying drawings, wherein Figs. 1, 2, and 3 are sectional elevations showing an embodiment of the invention,

Fig. 2 being in the planes of line 2-2, Fig. l and Fig. 1 being in the planes of line l|, Fig. 2,

Fig. 3 being a view generally similar to Fig. 1 but showing the parts in operated relation,

Fig. 4 is a horizontal section in the planes of line 4--4, Fig. 3, the section of Fig. 3 being indicated by the line 3-3, Fig. 4.

Fig. 5 is a detail in elevation as indicated by the lines 55, Figs. 1 and 3, the sectional plane of Fig. 1 being indicated by the line l-l, Fig. 5.

Figs. 6 to 9 illustrate a modification of the embodiment of Figs. 1 to 5, Figs. 6, 7, and 8 being views generally corresponding to Figs. 1, 2, and 4 respectively except that the mechanism is shown in locked position, the sectional planes of Fig. 6 being indicated by the lines 6-6, Figs. 7, 8, and 9, the sectional plane of Fig. 7 being indicated by 8 being indicated by the line 8-8, Fig. 6, and Fig. 9 being a detail from the outside, of parts appearing Fig. 8, as indicated by line 9--9 of the latter.

Figs. 10 to 13 illustrate a third form of the invention, Fig. 10 being a detail in elevation from the outside, as indicated line lfl-lll, Figs. 11 and 12.

Fig. 11 is a sectional elevation in the plane of line I l--l I, Fig. 10, showing the parts in tripping relation as indicated by dotted lines.

Fig. 12 is a view generally similar to Fig. 11 but showing the parts in non-tripping relation.

Fig. 13 is a detail in elevation of parts appearing in Fig. 12 as indicated by the line l3-l3 of the latter, the line l2-l2, Fig. 13 indicating the sectional plane of Fig. 12.

In general, as to the drawings, similar partsor parts of similar function in the several modifications, bear the same reference characters in some instances these being also the same characters applied to the corresponding parts in said patent.

Also, while the drawings illustrate automotive vehicle body application of the invention, it will 3 be understood that this is by way of exemplification only, the invention being equally applicable to other complementary wall and door structures. Likewise, while the drawings show the principal mechanism as mounted in the door, it will be appreciated that such mechanism could,

if desired, be mounted instead in the complemen-.

tary wall structure.

Moreover, for simplification of the description herein, so far as possible specific reference to unessential details such as screws, mounting means, deformationsoifsets, stops, and the like is omitted, as obvious toone skilled in the art, and not pertinent to the essential functional relationships of the invention.

With reference now to the drawings and first to Figs. 1 to thereof, l4 represents a generally hinged door structure, which may be of hollow sheet metal'construction as indicated, at the free edge of which is mounted, as on a sub-base or plate portion 32, secured within the door structure, a stub shaft 35 carrying on the outside a bifurcated latch member I2, of which the latch and throwout arms ill and l l respectively are integral parts, the latch element 35 being secured to the stub shaft 'SI on the inside for oscillatory movement with the member I2 between the door latched or operative position of these parts indicated in Fig. 1 and the door unlatched or operated position indicated in Figs. 3 and 4.

Spring means 50, having an arm 42 bearing against a cam part ll on the element 35 is arranged to yieldably urge these parts clockwise Figs. 1 and 3, from operative toward operated position, a stop 5!! engageable by an extremity of the element 35 being provided to limit its springactuated movement.

Mounted on the plate portion 32 for rotational movement on the bushing 55a, which is supported by stud pin 55, in the plane of the member 35, is a detent 54 having a shoulder 55 cooperative with a shoulder 51 on the member 35 to restrain the latter, together with the latch member I 2, in the door latched or operative position as shown Fig. 1. Detent 54 is movable between a latch restraining position as seen in Fig. 1 and a latch released position as seen in Fig. 3. As seen in Fig. i, detent 54 has an inner hub portion to which the outer portions is secured as by a press fit thereon.

Also mounted for rotational movement on bushing 55a as shown in Fig. i, and consequently effectively pivotally supported and oscillatable about the same center 'as detent 5,4, is a detent actuator lever or release member 54a having a downwardly extending arm member 62 engageable by a spring-returned push button 68 located to be accessible from the outside of the door, a spring 58 being arranged to yieldably urge the detent actuator lever 54a counterclockwise Figs.

7 1 and 3, so that when the push button is in return or non-operating position the actuator will be in the corresponding position. Engagement of a lug 54?) on the upper part of the actuator 5 2a against an armtitc on the detent 54, limits the motion of the actuator under the eifect of the spring 58, so that the detent itself is subject to the spring 58 when the lug 5M) and arm 54c interengage.

With a single exception what has thus far been described is not new in the art, and in substance appears in the Schonitzer patent to which reference has been made. In the Schonitzer patent the detent 54 and the detent actuator 54a are fast with each other though oscillatable on the stud 55, whereas herein the detent 54 and its actuator 54a may have relative rotary movement coaxial with the stud 55. V

Assuming the detent 54 and actuator 54a in fixed relation with each other, and the parts in the operative or latched position of Fig. 1, it will be apparent that depression of the push button 50 would engage the arm 52 of the actuator 54a to move the detent 54 clockwise, remove the de tent shoulder 55 from the shoulder 5'! of the element 55, release the arm ll of the latter to the action of the spring 46, and, by force through the stub shaft 3|, throw the latch member l2 clockwise; subsequent release of the push button 66 leaving the parts positioned as in Figs. 3 and i.

Likewise, commencing with the parts as in the operated position of Fig. 3, counterclockwise motion of the latch member i2 and element 35 against the spring ts to the position of Fig. 1 would result in automatically relatching thereof by motion of the detent 5d and its actuator E la in counterclockwise direction under the influence of the spring 58.

In practice, as disclosed in the Schonitzer patent, latching movement of the latch member I2 is accomplished as the door approaches closed position by engagement of a keeper pin, not herein illustrated, with the throwout arm l of the latch member, such pin being fixed for the purpose on the wall structure to which the door structure is complementary, so that when the door is fully closed and the member [2 latched, the latch arm as of the member 12 will secure such door in closed position. Likewise, upon unlatching, the member i2 is released to the action of the spring 46, whereupon its throwout arm 5 l tends to move the door in opening direction and as the door is opened the latch arm in moves into unlatched or operated position as seen in Fig. 3.

By the present invention means are provided for control of operative relation between the detent 54 and its manually operable actuating means, which actuating means includes the push button ti! and the actuator lever 54a, so that, under controlled circumstances, on depression of push button 69, although the actuator 54a may be actuated thereby against the spring 58, never theless the detent 54'may not have latch releasing actuation.

For such purpose means for selectively operatively connecting or interlocking the detent 5i and actuating member 54a are provided. Such means, as illustrated, includes a fixed pin H23 upon which is swingably shiftably and oscillatably mounted an actuable transmitting member or link llll having an arm Hi2 extending into registering notches or recesses 54d and Ede in the detent 54 and actuator 54a as indicated Figs. 1, 3, 4, and 6. The relation of the parts is such that when the member H3! is disposed as indicated in Figs. 1, 2, 3, and 4, the detent 5 and its actuator Eda, are effectively cperatively connected or interlocked to provide tripping or latch releasing operation of the detent by its actuator; whereas the member ll]! may have selective disposition (to the left, Fig. 2, downwardly Fig. 4, and toward the observer Figs. 1 and 3) to the position seen in Figs. 6, 7 and 8 wherein its arm I32 is with drawn from the notch or recess 54d in the detent 54. In such shifted position of the member Nil, movement of the detent actuating member 54a. while similar to its detent releasing movement, will be ineffective on the detent for tripping thereof, although it will cause similar but idling oscillating motion of the link member lfil. Thus 5. depression of the push button 80 has no latch releasing effect, and release of the button permits its automatic return from operated position underthe action of its spring 60b, accompanied by similar automatic return of the member 54a under the action of its spring 58. In other words, selection of the disposition of the member I! along its slideway H10 predetermines the tripping effectiveness of operation of the push button 60 and detent actuator 5411 as manually operable actuating means for effecting movement of the detent 54 from its latch restraining to its latch released position. Return of the member IEH from its idled position as seen in Fig. 6 to its operative position shown in Figs. 1, 3 and 4, wherein operation of the push button 60 and the actuator 54a will provide detent tripping, is freely accomplishable once the spring 58 has re turned the member 54a to its latched position, Fig. 1, thus realigning the notches 54d and 54a.

For control of the door similar to that of the push button til but from a second location, such as from the inside, a rock shaft 15 may be provided having an arm 1901 effective on an idler I41 oscillatable on a pin stud I48, which idler has an arm effective upon the detent actuator 54a, and which idler I 4'! may serve as stop for the detent 54 by engagement of the upper end 540 of the latter therewith-all as appears Figs. 1 and 3.

The arrangement is such that motion of the rock shaft clockwise in Figs. 1 and 3 will cause clockwise motion of the detent actuator 54a, accompanied by counterclockwise motion of the idler I41; the resultant effect possible upon the detent actuator 54a beingthus the same from the shaft 15 as that from the push button en. Any suitable means such as that fully disclosed in the above identified Schonitzer patent may be employed for control of the rock shaft 15.

For selection of the disposition of the member illl to predetermine the tripping effectiveness of the detent actuator 54a upon the detent 54, regardless of actuation of the member 54a by either the push button 60 or the shaft 15, a bell crank 58 pivoted on a stud 99 is provided, having an arm upwardly extending into a suitable recess in the member lill. For its actuation the bell crank has an outwardly extending arm actuable by a link I05 terminating in a handle which may be located at the window of thedoor as indicated Fig. 2.

From what has been described, it will be apparent that the arrangement is such that when the link Hi6 is in its upper position as shown in full lines Fig. 2, the arm I02 of the member [Bl will be located as illustrated Fig. 4 to provide effective operative relation between the detent 54 and its actuator 540, so that tripping of the detent will result from operation of either the push button Bll or the shaft 15; whereas when the link I06 is depressed to-its broken line position Fig. 2, normal operation of either the push button or the shaft will be ineffective for tripping the detent and an effective lock is provided against unauthorized opening of the door from outside.

For outside key actuated locking control of the tripping efiectiveness, lock means generally indicated at I03 may be provided, accessible from the outside of the door and effective upon a lever I04 by way of a shaft I05, the end of the lever being engageable with a downwardly extending arm on the bell crank 98, to shift and retain the bell crank in position to render the push button 60. shaft 15, and actuator 54a ineffective for tripping. Thus locking operation of the lock means I03 would, Fig. 2, shift the lever I04 clockwise to move the bell crank 98 counterclockwise and slide the member llll to the left, shifting the arm I02 to render the detent actuator 54a ineffective upon the detent 54 for tripping operation.

With reference now to Figs. 6 to 9 of the drawings. the arrangement is generally as before with the exception that the push button 60a is associated with the door handle I01 to be depressed by the thumb of the operator. The parts ap a in locked position wherein neither operation of the push button 60c nor the shaft 15 will trip the detent and release the door from the latching effect of the latch arm Ill or the opening effect of the spring 40. In Figs. 6 and 8 the push button 60a is shown in depressed position in full lines (and in extended position in dot and dash lines) and the actuator 54a is seen in its corresponding idled position. The dot and dash line position of arm 19d in Fig. 6 indicates its position after shaft 15 has been actuated.

It may be noted in connection wtih the two forms of the invention just described, which essentially constitute a single form, the arm I02 of the member llll constitutes a transmitting member arranged for operator-responsive detent tripping operation wherein it, as an actuable member has actuation by the detent actuator 54a, and is also arranged for selective disposition to provide similar but idling operation of the detent actuating member, inefiective upon the detent for tripping.

With reference now to the modification of Figs. 10 to 13, the door latch, spring, and detent assembly is combined as a single unit, and the push button, the means for predetermining its tripping effectiveness, and the lock therefor are combined in a second assembly unit; the two units being separately mounted in the door I 4, for subsequent cooperation.

I20 is a latch member, having the latch arm Iona and throwout arm H0, secured upon the stub shaft 3H! at the outside of the free edge of the door, the stub shaft carrying an element 350 on the inside of the door. The member I28 and element 350 are yieldably urged in counterclockwise direction as a unit by the spring 400.

A detent 540 is rotatably mounted at 550. The element 350 and the detent 540 have cooperative shoulders 510 and .560 respectively, whereby when the parts are positioned as in Fig. 12 the detent serves to latch the member I20 against the action of the spring 400. The detent has suitable associated spring means yieldably urging it clockwise Fig. 12, not appearing in the drawing but of function similar to the spring 58 disclosed in connection with Figs. 1 to 9.

A rock shaft as at carrying an arm d eng-ageable with a projection. at the top of the detent, is arranged to move the detent counterclockwise as indicated by the arrow thereon, for its tripping operation, to unlatch the member 520 to the action of the spring 400. The shaft 159 may be arranged for such operation by any suitable means, such as by a push button located on the inside face of the door as disclosed in the Schonitzer patent above identified.

For similar unlatching operation, by an operator outside of the door as will appear, a lever A, pivoted at B and of limited motion as by the pin (1' and cooperative slot illustrated. is provided 7 with a shoulder cooperative at D with a suitable projection on the detent 54!], the leverA bein movable to the position indicated at broken line, Fig. 12, to move the detent to unlatching position, the detent under the action of its spring serving for. return or the lever A to its full line position.

The latch arm I000. and throwout arm N of the member I20 cooperate with a keeper pin 18 mounted on the corresponding edge of the wall structure complementary to the door structure, the pin and member having relative movement between fully closed position'of the door, as indicated full lines, and released position of the door as indicated in broken lines, wherein the pin is indicated at 18c, all as fully disclosed in the said Schonitzer patent. Briefly, as the door closes and the pin H therefor moves relatively from its broken to full line position, the throwout arm i It is engaged and moves against the spring fill!) until the member I28 is latched by the detent 549, the latch arm IBM meanwhile moving downwardly back of the pin to secure the door closed. It will be apparent that depression of the lever A will move the detent to release the member I to the action of the spring 40!], so that the door will be unlatched and urged openwise.

For control of the door from the outside, a latch actuating and locking unit having a springn' eturned push buttongenerally indicated at 609 and having a plunger E is provided; this unit also, according to this invention, includes means effective between the plunger E and the lever A, for selective disposition to predetermine the tripping eiieotiveness of operation of the push button 6% and plunger E is manually operable actuating means for efiecting movement of detent 548, through the inter-mediate lever A, from latch restraining to latch released position. Moreover, lock means are provided for accomplishing such selection.

To these ends a support member F and associated latch actuating transmitting member G are arranged for sliding adjustment subject to a crank pin H under control of a lock generally indicated at I038, the member F being provided with a suitable opening into which the pin I-I projects for the purpose. The member G is articulately related to the member F to have sliding adjustment therewith under control of the lock, and also to have swinging adjustment relative thereto as indicated Fig. 11; such means as here shown being a spring loop interconnecting the members, but other more conventional hinge arrangement might obviously be employed for the purpose.

The sliding adjustment of the member G is such that it may have the eiiective position illustrated full lines Fig. 11, where it will be engageable by the plunger E of the push button 6% to be swung upon depression of the push button, or it may have the ineffective position of Fig. 12, wherein it is clear of the plunger path. Also the arrangement is such that when the member G is moved by the plunger E, as from full to broken lines Fig. 11, it will engage the lever A for detent tripping operation thereof.

Thus, by the lock means I @30, the operator may select the disposition of the actuable transmitting member G to predetermine the tripping efiectiveness of operation of the push button 6% and plunger E upon the detent an and thus upon latch and throwout member [28.

It may be noted, as appears from the drawings, that the door latch member H20, the lever A,

the parts effective therebetween' and their 'asso ciated parts are all mounted on the base 320' for assembly as a unit at the free edge of the door. Also, the push button 600, lock H330, and member G and parts effective therebetween are interconnected as a unitary assembly for mounting at the face of the door. The two units thereafter are cooperative in the manner and for the purposes described.

Certain features of the door control mechanisms herein shown and described are claimed in my copending United States patent application Serial No. 746,521, filed May 7, 1947, and crossreference is herebymade to said application.

In all three disclosed embodiments of tripper type door control mechanism, it will be noted that each discloses detent and detent trip means associated therewith and including cooperative actuating and actuable members mounted and arranged for operator-responsive detent-tripping operation, wherein the actuable member has actuation by the actuating member, one of the members being also arranged for selective disposition relative to the other, to provide similar but idling operation of the actuating member, ineifective upon the actuable member for detent tripping, the actuating member having associated means providing its automatic return from operated position, and means arranged for selection of such disposition, to predetermine the tripping effectiveness of the actuating member operation.

In order to assist in an understanding Of the terms used herein and to more closely associate the terminology of the claims with that of the specification, it is pointed out that, in the embodiment of my invention shown in Figs. 1 to 9, the push button 60 (or 60a) and the actuating member 54a comprise manually operable actuating means for effecting movement of the detent 54 from its latch restraining position (Fig. 1) to its latch released position (Fig. 3). In the embodiment shown in Figs. 10 to 13 the manually operable actuating means for effecting movement of the detent from latch restraining position to latch released position includes the push button 590 and the actuating member or plunger E. In Figs. 1 to 9 the actuable transmitting member it [-4 t2 constitutes means whereby, idling operation of the manually operable actuating means may be permitted without accompanying release of the latch member I2 from door latched position. So also, in Figs. 10 to 13, the actuable transmitting member G constitutes means whereby idling operation of the manually operable actuating means may be permitted, it being understood that where the term idling is used herein in connection with the movement of the actuating means or of the actuable transmitting means it is intended to refer to movement thereof which is ineffective to release the latch member from door latched position even though such movement is not entirely free or unopposed and regardless of whether such idling movement requires more or less force to be applied by the operator than is required for operating or non-idling movement.

In Figs. 1 to 9 the bell crank 98 and the asso- V oiated mechanism for supporting and operating same comprise a control means for determining the effectiveness of the transmitting member lei- 502 to permit idling operation of the manually operable actuating means, while in Figs. 10 to 13 the key controlled lock I 030 with its pin H and member F comprise the control means for detennlnin'g'the effectiveness of the transmitting member, G to permit idling movement of the manually operable actuating means.

From the above description of several embodiments of my invention it will be seen that the manually operable actuating means for effecting movement of the detent may comprise a single part or a series or chain of parts, such as push buttons, handles, shafts, links, levers, etc, which are associated to transmit the effort exerted by the operator to the, mechanism. So also, the actuable transmitting means and the selector or control means therefore may each comprise one or a series or chain of coacting parts as required in the particular embodiment of my invention. Thus without departing from the spirit of my invention, variations and modifications may be made in the number and arrangement of parts which are included in the actuating means, the actuable transmitting means, the control means, and also in the various usual units of a tripper type latch mechanism, such as the latch member and its associated parts and the detent and the parts associated directly therewith. I do not therefore wish to be limited to the particular embodiments of my improved door control mechanism herein shown and described but claim as my invention all forms thereof coming within the scope of the appended claims.

What I claim is: 1. In a door control mechanism, a frame structurehaving a plate portion adapted to face the free edge wall of the door and provided at its inner edge with a flange portion, a latch member pivotally supported on said plate portion, a detent adapted releasably to hold said latch member in door latched position, means for pivotally supporting said detent on said plate portion for movement between a latch restraining position and a latch released position, an actuating member, said actuating member being pivotally supported on said means for pivotally supporting said detent for movement about the same center as said detent and having a part swingable toward said flange portion, means for swinging said actuating member, a shiftable member mounted on said flange portion, means for shifting said shiftable member, and coupling means operatively connecting said actuating member, detent, and shiftable member and adapted to be uncoupled from said detent upon shifting said shiftable member in one direction.

2. In a latch mechanism for a swinging door, a support adapted to be mounted on the door, a latch member mounted on the support to turn about an axis extending longitudinally of the door, a shiftable detent engageable with said member to hold it in one or more latched positions, a swinging detent release member adapted to be actuated from the outside of the door to disengage the detent from said latch member,

a common means for pivotally supporting said detent and release member, and manually operable means accessible at the inside of the door for connecting said release member to and disconnecting it from said detent.

3. In a door control mechanism, a support having a plate portion adapted to face the jamb of the door and provided at its inner edge with a flange portion, a latch member pivotally mount- .ed on said plate portion and adapted to have mounted on said plate portion and adapted releasably tohold said latch member in saiddoor latched position, means for supporting said detent ror movement between a latch member restraining position and a latch member released position, an actuating lever pivotally mounted on said plate portion and havin a part swinga-ble toward said flange portion, outer manually operable: means for swinging said lever, a transmitting linkmember, means for supporting said transmitting link member for swinging movement, said transmitting link, member being operable by said actuating lever and normally operatively coupled to said detent, and inner manually operable means on said flange for moving said transmitting link member into and out of coupled relation with said detent.

4. In a latch mechanism for a swinging door, a support having a plate portion adapted to face the jamb of the door and provided at its inner edge with a flange portion, a latch device pivotally mounted on said plate portion, detent means pivotally mounted on said plate portion for holding said latch device in door latching position, a lever pivotally mounted on said plate portion and having a part swingable toward said flange portion, outer manually operable means for swinging said lever, link means mounted for swinging and shifting movement, operable by said lever and normally operatively coupled to said detent means, and inner manually operable means on said flange portion for shifting said link means into and out of coupled relation with said detent means.

5. In a latch mechanism for a swinging door, a support having a plate portion adapted to face the jamb of the door and provided at its inner edge with a flange portion, a latch device pivotally mounted on said plate portion, detent means pivotally mounted on said plate portion for holding said latch device in door latching position, a lever pivotally mounted on said plate portion and having a part swingable toward said flange portion, means for swinging said lever, a shiftable member supported for sliding movement relative to said flange portion, means for shifting said shiftable member, and coupling means movable by said shiftable members and normally operatively connecting said lever and said detent means and adapted to be uncoupled from the detent means upon shifting the shiftable member in one direction.

6. In a latch mechanism for a swinging door, a support having a plate portion adapted to face the jamb of the door and provided at its inner edge with a flange portion, a latch device pivotally mounted on said plate portion, detent means pivotally mounted on said plate portion for holding said latch device in door latching position, a lever pivotally mounted on said plate portion and having a part swingable toward said flange portion, means for swinging said levers, a shiftable member on said flange portion, and a swingable link extending between said lever and said shiftable member and adapted, upon shifting the shiftable member, to be moved out of and into position to couple together said lever and said detent means.

7. In a door control mechanism, a frame structure having a plate portion adapted to face the free edge wall of the door and provided at its inner edge with a flange portion, a latch member pivotally supported on said plate portion, a detent adapted releasably to hold said latch member in door latched position, means for pivotally supporting said detent on said plate portion for movement between a latch restraining position and a latch released position, an actuating member pivotaliy supported on said plate portion and having a part swingable toward said flange portion, means for swinging said actuating member, a shiftable member mounted on said flange portion, means for shifting said shiftable member, and coupling means operatively connecting said actuating member, detent, and shiftable member and adapted to be uncoupled from said detent upon shifting said shiftable member in one direction.

' EDWIN L. ALLEN.

References Cited in the file of'this patent UNITED STATES PATENTS Number Date 7 Name Wells Dec. 3, 1929 Jacobi Nov. 12, 1940 Dall Nov. 12,1940 Lakin Feb, 11, 1 941 Marple et a1. July 15, 1941 Van Voorhees Oct. 21, 1941 Wagner Feb. 12,1946 Smith Dec. 3, 1946 Jacobi 1 Nov. 30, 1948 

